Charging dock



FIG. 1 is a front, right, top perspective view of charging dock;

FIG. 2 is a back, right, bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is right-side elevation view thereof;

FIG. 6 is a left-side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines depict portions of the charging dock that form no part of the claimed design. 

CLAIM The ornamental design for a charging dock, as shown and described. 